Is this true about fuel pumps?

SlowStang2 · 06-25-2001, 06:23 PM

I read in another post on here that no matter what fuel pump you get, the motor will take as much fuel as it needs and any left over goes back in the tank. Is this true? Basically, if you wanted, you could get a 190 pump and it wouldn't affect gas mileage at all if your car is lightly modified? Someone tell me please. Oh well, what is the stock pump ranged at? For a 94 GT that is..

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94' Stang GT Convertible Cobra upper&lower, Mac cold air w/K&N, BBK equal length shorties, BBK offroad H-pipe, American Thunder cat-back, BBK T/B 65mm, 24lb injectors, Pro-77mm MAM, pulleys, aluminum driveshaft, 3.55s 14.4@100. (Sad, i know. i have stock heads)

TEXSN95 · 06-25-2001, 06:28 PM

Ya thats true...a 190 is good insurance since the stock pumps suck. I think the stock pump is 88lph, but in 94 they "might" have switched to a 110. I'd like to know that too.

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Clint L.
White 95 Cobra #3637
58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW LCAs, Kenny Brown super subs, Steeda CC plates, aluminum driveshaft, Steeda quadrant, B&M ripper, Kirban FPR, MSD6A, Taylor wires, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s
13.61 @ 104.7 w/ 2.22

Mr 5 0 · 06-25-2001, 07:46 PM

The stock FP is rated at 88 lph.

Yes, the capacity of the pump - no matter how huge - doesn't determine your mpg; the engine components - and how you drive the car - does that.

By the same token, a bigger FP won't help you go any faster if the engine remains exactly the same after the pump install as it was before. You'll just have a bigger capacity FP, which is a good thing, especially if plan future mods.

BrentK7 · 06-25-2001, 10:50 PM

Yeah like Mr 5.0 said it is good to have the larger fuel pump for future mods. also if you plan on selling your car you can say "Ready for Mods" in the description ++.

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-Brent "BrentK7" Keltner
BrentK7@Gamershome.com
ICQ# 5413021
-End of Line-

06-25-2001, 06:23 PM	#1
SlowStang2 Registered Member Join Date: May 2001 Location: Stuart, FL, US Posts: 147	Is this true about fuel pumps? I read in another post on here that no matter what fuel pump you get, the motor will take as much fuel as it needs and any left over goes back in the tank. Is this true? Basically, if you wanted, you could get a 190 pump and it wouldn't affect gas mileage at all if your car is lightly modified? Someone tell me please. Oh well, what is the stock pump ranged at? For a 94 GT that is.. ------------------ 94' Stang GT Convertible Cobra upper&lower, Mac cold air w/K&N, BBK equal length shorties, BBK offroad H-pipe, American Thunder cat-back, BBK T/B 65mm, 24lb injectors, Pro-77mm MAM, pulleys, aluminum driveshaft, 3.55s 14.4@100. (Sad, i know. i have stock heads)

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06-25-2001, 06:28 PM	#2
TEXSN95 Registered Member Join Date: Mar 2001 Location: college station, tx Posts: 143	Ya thats true...a 190 is good insurance since the stock pumps suck. I think the stock pump is 88lph, but in 94 they "might" have switched to a 110. I'd like to know that too. ------------------ Clint L. White 95 Cobra #3637 58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW LCAs, Kenny Brown super subs, Steeda CC plates, aluminum driveshaft, Steeda quadrant, B&M ripper, Kirban FPR, MSD6A, Taylor wires, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s 13.61 @ 104.7 w/ 2.22

06-25-2001, 07:46 PM	#3
Mr 5 0 Conservative Individualist Join Date: May 1997 Location: Wherever I need to be Posts: 7,487	The stock FP is rated at 88 lph. Yes, the capacity of the pump - no matter how huge - doesn't determine your mpg; the engine components - and how you drive the car - does that. By the same token, a bigger FP won't help you go any faster if the engine remains exactly the same after the pump install as it was before. You'll just have a bigger capacity FP, which is a good thing, especially if plan future mods.

06-25-2001, 10:50 PM	#4
BrentK7 Registered Member Join Date: Jun 2001 Location: Overland Park, KS, USA Posts: 16	Yeah like Mr 5.0 said it is good to have the larger fuel pump for future mods. also if you plan on selling your car you can say "Ready for Mods" in the description ++. ------------------ -Brent "BrentK7" Keltner BrentK7@Gamershome.com ICQ# 5413021 -End of Line-